Patent · US Active

Active esters of N-substituted piperazine acetic acids, including isotopically enriched versions thereof

US8569304B2 · kind B2 · utility

0Cited by

21References

48Claims

0Family size

Assignee

DH TECHNOLOGIES DEVELOPMENT PTE. LTD. · SG

Inventors

Subhakar Dey · North Billerica, US
Darryl Pappin · Boxborough, US
Subhasish Purkayastha · Acton, US
Sasi Pillai · Littleton, US
James M. Coull · Westford, US

Key dates

Filing date	Mar 5, 2009
Grant date	Oct 29, 2013
Priority date	—
Expiry date	Dec 3, 2030

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07D295/15
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

In some embodiments, this invention pertains to active esters of N-substituted piperazine acetic acid, including isotopically enriched versions thereof. In some embodiments, this invention pertains to methods for the preparation of active esters of N-substituted piperazine acetic acid, including isotopically enriched versions thereof.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.